EP0233099A1 - Verfahren zum Regeln einer Farbendurchflussmenge und Anlage zur Durchführung dieses Verfahrens - Google Patents

Verfahren zum Regeln einer Farbendurchflussmenge und Anlage zur Durchführung dieses Verfahrens Download PDF

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Publication number
EP0233099A1
EP0233099A1 EP87400053A EP87400053A EP0233099A1 EP 0233099 A1 EP0233099 A1 EP 0233099A1 EP 87400053 A EP87400053 A EP 87400053A EP 87400053 A EP87400053 A EP 87400053A EP 0233099 A1 EP0233099 A1 EP 0233099A1
Authority
EP
European Patent Office
Prior art keywords
paint
hydraulic
circuit
pump
nozzle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP87400053A
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English (en)
French (fr)
Other versions
EP0233099B1 (de
Inventor
Charles Yves Greggory
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Prosign Sa Te La Garenne Colombes Frankrijk
Original Assignee
GREGGORY SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by GREGGORY SA filed Critical GREGGORY SA
Priority to AT87400053T priority Critical patent/ATE41325T1/de
Publication of EP0233099A1 publication Critical patent/EP0233099A1/de
Application granted granted Critical
Publication of EP0233099B1 publication Critical patent/EP0233099B1/de
Expired legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
    • E01C23/16—Devices for marking-out, applying, or forming traffic or like markings on finished paving; Protecting fresh markings
    • E01C23/20—Devices for marking-out, applying, or forming traffic or like markings on finished paving; Protecting fresh markings for forming markings in situ
    • E01C23/22—Devices for marking-out, applying, or forming traffic or like markings on finished paving; Protecting fresh markings for forming markings in situ by spraying
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
    • B05B9/03—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material
    • B05B9/04—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump
    • B05B9/0403—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump with pumps for liquids or other fluent material
    • B05B9/0409—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump with pumps for liquids or other fluent material the pumps being driven by a hydraulic or a pneumatic fluid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
    • B05B9/03—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material
    • B05B9/04—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump
    • B05B9/06—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump the delivery being related to the movement of a vehicle, e.g. the pump being driven by a vehicle wheel
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F13/00—Apparatus for measuring by volume and delivering fluids or fluent solid materials, not provided for in the preceding groups

Definitions

  • the invention relates to a method for controlling the paint flow rate with a view to regulating the thickness of the layer of paint deposited on the ground by an installation for pressurizing this paint to spray it through at minus one nozzle, in particular for producing marking strips.
  • an installation which, in addition to at least one nozzle through which the paint is sprayed, includes: - connected to the inlet of each nozzle, a painting circuit, - a paint tank into which the entrance to the paint circuit dives, - inserted in the paint circuit between the tank and the nozzles, a paint pump, - to drive the paint pump, a hydraulic motor, - connected to the inlet and outlet of the hydraulic motor, a hydraulic circuit, - at least one hydraulic fluid reservoir into which the inlet and outlet of the hydraulic circuit are immersed, - a hydraulic pump interposed on the hydraulic circuit between the tank and the inlet of the hydraulic motor, - controlling the hydraulic pump, a motor means, - a means of controlling the flow.
  • the width and thickness of the layer to be obtained constitute the instructions to be observed; they are predetermined according to many parameters such as the properties of the receiving surface (roughness, porosity %), the use of this surface (traffic lane, parking area %) the climatic conditions to which the surface is exposed , the standards in force etc ).
  • the thickness of the strip is more complex because, regardless of the width of the strip to be produced, the thickness of the layer deposited by each nozzle depends on the speed of advance of the vehicle and especially on the actual flow of the nozzle.
  • the flow rate of the nozzle is a function in particular of the section of the nozzle as well as of the pressure upstream thereof and of a coefficient K linked to a coefficient of resistance, to a length constriction for an orifice diameter and the viscosity of the paint, which constitute all the parameters which must be taken into account.
  • the setting pressure was determined as a function of an estimated flow rate with reference to a known section of the nozzle, which changes over time and, for all these reasons, the flow rate also changes.
  • This actual flow is then controlled, for example by proceeding as is known in another field of application (FR-A-2,519,162) by measuring the time taken to fill a calibrated capacity to which the flow is temporarily diverted. wants to measure the flow.
  • Such regulation is based on the principle that at constant pressure, the flow rate of a pump is proportional to its speed.
  • the hydraulic motor and therefore the pump of the main circuit of this installation must, throughout their operating cycle, be driven by a movement relatively continuous and must therefore be motor and pump with rotary movement, however, it is known that, for these machines which are designed with "drawer" seals, without seals, the leaks are proportional to the pressure. For example, a displacement engine of two hundred and fifty cubic centimeters per revolution at three hundred bars of pressure can leak about twenty eight liters per minute while at thirty bars it is one liter per minute.
  • the information collected is not stable enough to be used in a soil marking facility.
  • a result which the invention aims to obtain is a method and an installation which guarantee a control of the paint flow rate with a view to regulating the thickness of the layer of paint deposited to produce marking strips on the ground.
  • a control method of the aforementioned type in particular characterized in that: . during assembly: - to propel the paint to the nozzle instead of a rotary pump, an alternative valve pump is inserted on the paint circuit, the piston of which has a dynamic seal and delimits in the cylinder two chambers, one connected to the nozzle, the other to the tank, among which the chamber connected to the nozzle houses the piston rod whose section is such that this chamber offers a useful section equal to half that of the other chamber, - to control this pump instead of a rotary hydraulic motor, an alternating motor is inserted on the hydraulic circuit, the piston of which has a dynamic seal and defines two chambers, one of which houses the piston rod, the cross section of which is such that this chamber offers also a useful section equal to half that of the other chamber, these engine chambers being connected in parallel to the circuit coming from the hydraulic pump and this, at least for that of the chambers offering the largest useful section via of an organ remote-controlled distribution ensuring that in the two directions of translation,
  • the proportionality ratio is determined between on the one hand, the hydraulic flow supplying the hydraulic motor and, on the other hand, the paint flow rate provided by the paint pump controlled by this hydraulic motor then, . during use, in order to control the flow in the paint circuit, instead of being in this paint circuit, it is in the hydraulic circuit and preferably between the hydraulic pump and the hydraulic motor, which is interposed a flow meter and then, read the signal given by the flow meter and by a suitable means, according to said proportionality ratio, convert this signal to arrive at a signal representative of the actual paint flow.
  • nozzle 3 through which the paint 4 is sprayed, it includes: - connected to the inlet of each nozzle 3, a painting circuit 13, a paint tank 5 into which the inlet 131 of the paint circuit 13 plunges, - interposed on the paint circuit 13, between the tank 5 and the nozzle 3, a paint pump 6, delimiting on the circuit a high pressure section 132 connected to the nozzle and a low pressure section 133 connected to the reservoir, - to drive the paint pump 6, a hydraulic motor 7, connected to the inlet 121 and to the outlet 122 of the hydraulic motor 7, a hydraulic circuit 12, at least one reservoir 9 of hydraulic fluid 8 into which the inlet 123 and outlet 124 of the hydraulic circuit 12 are immersed, a hydraulic pump 10 interposed on the hydraulic circuit 12 between the reservoir 9 and the inlet 121 of the hydraulic motor 7, - controlling the hydraulic pump 10, a motor means 11 such as an engine or a power take-off, - A means 14 for controlling flow.
  • the width and either the thickness or the weight per unit area of the layer to be obtained depending on the density of the paint constitute the instructions to be observed.
  • the installation is provided with adjustment means.
  • the height on the ground of the nozzle is adjusted.
  • Controlling the forward speed of the vehicle is relatively simple to perform. It does not have to be described.
  • this flow rate is measured using a flow meter 15 that includes the means 14 for controlling the flow.
  • an alternative valve pump 6 is inserted on the paint circuit, the piston 61 of which has a dynamic seal 62 and delimits two chambers in the cylinder 63 64, 65, one 64 connected to the nozzle 3 and the other 65 connected to the tank 5 among which the chamber 64 connected to the nozzle 3 houses the piston rod 61 whose cross section is such that this chamber offers a cross section useful equal to half that of the other room 65, -
  • an alternating motor is inserted on the hydraulic circuit, the piston 71 of which has a dynamic seal 72 and defines in the cylinder 73 two chambers 74, 75 including a chamber 74 accommodating the rod 76 of the piston 71, the section of which is such that this chamber 74 also offers a useful section equal to half that of the other chamber 75, these chambers 74, 75 of the motor 7 being
  • the proportionality ratio 21 is determined between on the one hand, the hydraulic flow 23 supplying the hydraulic motor 7 and, on the other hand, the paint flow 22 provided by the pump paint 6 controlled by this hydraulic motor 7 then, .
  • the proportionality ratio 21 is determined between on the one hand, the hydraulic flow 23 supplying the hydraulic motor 7 and, on the other hand, the paint flow 22 provided by the pump paint 6 controlled by this hydraulic motor 7 then, .
  • it is in the hydraulic circuit 12 and preferably between the hydraulic pump 10 and the hydraulic motor 7, that a flowmeter 15 is inserted and then the signal 20 given by the flowmeter 15 is read and by a suitable means 17, according to said proportionality ratio 21, this signal 20 is converted to obtain a signal 24 representative of the flow real painting.
  • the reciprocating paint pump has the advantage in terms of tightness of resembling a jack which has, at the level of the single working piston, a seal of the herringbone type whose only pressure allows almost complete tightness.
  • Said hydraulic motor which drives the paint pump is also an alternating cylinder which has the particularity of reversing automatically at each limit switch. Its joints also form well-known seals of the cylinders.
  • the proportionality ratio is durable and, therefore, the hydraulic flow accurately represents the paint flow.
  • the flowmeter is protected from attack by paint and its charges, which ensures good longevity.
  • the signal 24 supplied by the device 17 for determining the flow rate of sprayed paint is used, for example in a computer. 36 in combination with a signal 37 representative of the speed of movement of the vehicle 2, carrying the projection installation 1.
  • the pressure can be adjusted upstream of the nozzle and to be independent of the viscosity preferably the nozzle can be of the so-called thin-walled type.
  • the value representative of the quantity of paint per unit area is calculated such as the thickness or the grammage of the layer.
  • this signal 25 of the real flow rate per unit area can be sent to a circuit 26 for comparison with respect to a signal 27 produced by a circuit 28 with respect to a set point, either to provide a information on the possible error, for example by means of at least one indicator, or to correct the flow of the hydraulic circuit by means of a control device 30.
  • the actual flow signal 24 can be sent to a totalizer 31 for the purpose, for example, of checking the level of the tank or of daily consumption.
  • the flow rate of the hydraulic pump will not be regulated, but it is this pump which will adjust its flow rate according to demand, and always at a maximum pressure during normal operation.
  • This proportionality ratio then becomes a constant which is automatically or manually, for example using the coding wheels, supplied to the conversion device 17.
  • the installation also fulfills the following functions: - the display of the instant dosage for example for fifteen seconds on a liquid crystal screen; this instant dosage represents the average of all the calculations carried out during the program scan and for the entire duration of the application, - the calculation of the average dosage according to the quantity of paint delivered and the painted surface; the calculator of this average dosage can be set to zero when leaving a site for example and, - the output on printer, at the end of the site for example, of a ticket giving all or part of the above information.
  • the installation provided with the means for implementing the method comprises in particular, in addition to the elements provided for in the previous installations: - to propel the paint, instead of a rotary pump, an alternative valve pump 6 whose piston 61 has a dynamic seal 62 and delimits in the cylinder 63 two chambers 64, 65 one 64 connected to the nozzle 3 and the other 65 to the tank 65, among which the chamber 64 connected to the nozzle 3 houses the rod 66 of the piston 61 whose section is such that this chamber 64 offers a useful section equal to half that of the other chamber 65, -
  • a reciprocating hydraulic motor 7 instead of a rotary hydraulic motor, a reciprocating hydraulic motor 7, the piston 71 of which has a dynamic seal 72 and defines in the cylinder 73 two chambers 74, 75 including one chamber 74 housing the rod 76 of the piston 71, the cross section of which is such that this chamber 74 also offers a useful cross section equal to half that of the other chamber 75, these chambers 74, 75 of the motor 7 being connected in parallel to the circuit
  • This installation also includes: a means 16 for determining the ratio 21 between the paint flow 22 of the pump 6 and the flow 23 of hydraulic fluid from the motor 7 which means 16 is capable of transmitting a signal 21 to the conversion means 17, -
  • the operating assembly 18 comprises means 36 combining the signal 24 representative of the actual paint flow 22 with a signal 37 representative of the speed of movement of the vehicle and capable on these bases of developing information 25 representative of the amount of paint sprayed per unit area.
  • the flow meter 15 is a turbine flow meter which emits pulses and for example two hundred and fifty six pulses per liter.
  • this flowmeter is very little influenced because the variation in viscosity due to differences in oil temperature (20 to 80 ° C) only influences two per thousand on the information given, which is insignificant.

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  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Road Repair (AREA)
  • Coating Apparatus (AREA)
  • Road Signs Or Road Markings (AREA)
  • Spray Control Apparatus (AREA)
  • Nozzles (AREA)
  • Road Paving Machines (AREA)
  • Reciprocating Pumps (AREA)
  • Fluid-Pressure Circuits (AREA)
EP87400053A 1986-01-13 1987-01-13 Verfahren zum Regeln einer Farbendurchflussmenge und Anlage zur Durchführung dieses Verfahrens Expired EP0233099B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87400053T ATE41325T1 (de) 1986-01-13 1987-01-13 Verfahren zum regeln einer farbendurchflussmenge und anlage zur durchfuehrung dieses verfahrens.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8600665 1986-01-13
FR8600665A FR2592816B1 (fr) 1986-01-13 1986-01-13 Procede de controle de debit de peinture, moyens pour la mise en oeuvre du procede et installations pourvues de ces moyens.

Publications (2)

Publication Number Publication Date
EP0233099A1 true EP0233099A1 (de) 1987-08-19
EP0233099B1 EP0233099B1 (de) 1989-03-15

Family

ID=9331235

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87400053A Expired EP0233099B1 (de) 1986-01-13 1987-01-13 Verfahren zum Regeln einer Farbendurchflussmenge und Anlage zur Durchführung dieses Verfahrens

Country Status (6)

Country Link
EP (1) EP0233099B1 (de)
AT (1) ATE41325T1 (de)
DE (1) DE3760061D1 (de)
ES (1) ES2008108B3 (de)
FR (1) FR2592816B1 (de)
GR (1) GR3000017T3 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0887111A3 (de) * 1997-06-28 1999-08-18 WALTER HOFMANN GmbH, MASCHINENFABRIK UND VERTRIEB Strassenmarkierungsmaschine mit fahrgeschwindigkeitsproportional angetriebener Pumpenkombination
FR2849692A1 (fr) * 2003-01-06 2004-07-09 Bernard Camus Dispositif pour connaitre le debit en vue de determiner le dosage des micros bille de verre destinees a etre deposees par une machine pour realiser des marquages sur les routes
EP1466051A2 (de) * 2002-01-15 2004-10-13 Graco Minnesota Inc. Linienmarkierungsvorrichtungssensor und -anzeigesystem
CN106861976A (zh) * 2017-03-03 2017-06-20 武汉科技大学 实时监控流量的静电涂油机供油系统

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB359742A (en) * 1930-11-06 1931-10-29 Jens Orten Boving Improvements in hydraulically operated pumps for raising liquids
FR2250388A5 (en) * 1973-10-31 1975-05-30 Roffo Ets Plunger pump drive - has hydraulic agricultural sprayer motor fluid metered by friction roller running against landwheel
FR2299918A1 (fr) * 1975-02-07 1976-09-03 Tecnoma Installation permettant de realise
FR2326986A1 (fr) * 1975-10-29 1977-05-06 Champion Spark Plug Co Systeme d'alimentation en peinture d'un pistolet de pulverisation a action hydrodynamique
US4247045A (en) * 1979-04-20 1981-01-27 Prismo Universal Corporation Automatic volume control system
FR2519162A1 (fr) * 1981-12-29 1983-07-01 Nodet Gougis Procede et dispositif d'etalonnage pour un appareil de pulverisation de fluide avec regulation de debit

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB359742A (en) * 1930-11-06 1931-10-29 Jens Orten Boving Improvements in hydraulically operated pumps for raising liquids
FR2250388A5 (en) * 1973-10-31 1975-05-30 Roffo Ets Plunger pump drive - has hydraulic agricultural sprayer motor fluid metered by friction roller running against landwheel
FR2299918A1 (fr) * 1975-02-07 1976-09-03 Tecnoma Installation permettant de realise
FR2326986A1 (fr) * 1975-10-29 1977-05-06 Champion Spark Plug Co Systeme d'alimentation en peinture d'un pistolet de pulverisation a action hydrodynamique
US4247045A (en) * 1979-04-20 1981-01-27 Prismo Universal Corporation Automatic volume control system
FR2519162A1 (fr) * 1981-12-29 1983-07-01 Nodet Gougis Procede et dispositif d'etalonnage pour un appareil de pulverisation de fluide avec regulation de debit

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0887111A3 (de) * 1997-06-28 1999-08-18 WALTER HOFMANN GmbH, MASCHINENFABRIK UND VERTRIEB Strassenmarkierungsmaschine mit fahrgeschwindigkeitsproportional angetriebener Pumpenkombination
EP1466051A2 (de) * 2002-01-15 2004-10-13 Graco Minnesota Inc. Linienmarkierungsvorrichtungssensor und -anzeigesystem
EP1466051A4 (de) * 2002-01-15 2006-01-11 Graco Minnesota Inc Linienmarkierungsvorrichtungssensor und -anzeigesystem
FR2849692A1 (fr) * 2003-01-06 2004-07-09 Bernard Camus Dispositif pour connaitre le debit en vue de determiner le dosage des micros bille de verre destinees a etre deposees par une machine pour realiser des marquages sur les routes
CN106861976A (zh) * 2017-03-03 2017-06-20 武汉科技大学 实时监控流量的静电涂油机供油系统

Also Published As

Publication number Publication date
DE3760061D1 (en) 1989-04-20
ATE41325T1 (de) 1989-04-15
GR3000017T3 (en) 1989-10-31
FR2592816B1 (fr) 1988-08-19
FR2592816A1 (fr) 1987-07-17
EP0233099B1 (de) 1989-03-15
ES2008108B3 (es) 1989-07-16

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